title: [Hepatitis epidemica in Nordrhein-Westfalen in the years 1949-1950].
mesh_terms: D001699:Biometry; D006505:Hepatitis; D006506:Hepatitis A / Q000453:epidemiology* / Q000706:statistics & numerical data*; D014765:Viral Vaccines
chemical_list: D014765:Viral Vaccines
keywords: HEPATITIS, INFECTIOUS/epidemiology and statistics
vernacular_title: Die Hepatitis epidemica in Nordrhein-Westfalen in den-Jahren 1949 und 1950.